Division of Gastroenterology, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.
Division of Gastroenterology, Department of Medicine, Queen's University, Kingston, Ontario, Canada.
Gastroenterology. 2017 Feb;152(3):497-514. doi: 10.1053/j.gastro.2016.12.032. Epub 2017 Jan 4.
BACKGROUND & AIMS: Video capsule endoscopy (CE) provides a noninvasive option to assess the small intestine, but its use with respect to endoscopic procedures and cross-sectional imaging varies widely. The aim of this consensus was to provide guidance on the appropriate use of CE in clinical practice.
A systematic literature search identified studies on the use of CE in patients with Crohn's disease, celiac disease, gastrointestinal bleeding, and anemia. The quality of evidence and strength of recommendations were rated using the Grading of Recommendation Assessment, Development, and Evaluation (GRADE) approach.
The consensus includes 21 statements focused on the use of small-bowel CE and colon capsule endoscopy. CE was recommended for patients with suspected, known, or relapsed Crohn's disease when ileocolonoscopy and imaging studies were negative if it was imperative to know whether active Crohn's disease was present in the small bowel. It was not recommended in patients with chronic abdominal pain or diarrhea, in whom there was no evidence of abnormal biomarkers typically associated with Crohn's disease. CE was recommended to assess patients with celiac disease who have unexplained symptoms despite appropriate treatment, but not to make the diagnosis. In patients with overt gastrointestinal bleeding, and negative findings on esophagogastroduodenoscopy and colonoscopy, CE should be performed as soon as possible. CE was recommended only in selected patients with unexplained, mild, chronic iron-deficiency anemia. CE was suggested for surveillance in patients with polyposis syndromes or other small-bowel cancers, who required small-bowel studies. Colon capsule endoscopy should not be substituted routinely for colonoscopy. Patients should be made aware of the potential risks of CE including a failed procedure, capsule retention, or a missed lesion. Finally, standardized criteria for training and reporting in CE should be defined.
CE generally should be considered a complementary test in patients with gastrointestinal bleeding, Crohn's disease, or celiac disease, who have had negative or inconclusive endoscopic or imaging studies.
视频胶囊内镜(CE)为评估小肠提供了一种非侵入性选择,但它在与内镜检查程序和横截面成像的使用方面差异很大。本共识的目的是为 CE 在临床实践中的合理使用提供指导。
系统文献检索确定了关于 CE 在克罗恩病、乳糜泻、胃肠道出血和贫血患者中使用的研究。使用推荐评估、制定和评估(GRADE)方法对证据质量和建议强度进行评级。
共识包括 21 条关于小肠 CE 和结肠胶囊内镜使用的声明。如果必须知道活动期克罗恩病是否存在于小肠中,且回结肠镜检查和影像学研究为阴性,CE 被推荐用于疑似、已知或复发的克罗恩病患者。不推荐用于慢性腹痛或腹泻的患者,因为这些患者没有通常与克罗恩病相关的异常生物标志物的证据。CE 被推荐用于评估尽管经过适当治疗但仍有不明原因症状的乳糜泻患者,但不能用于诊断。在显性胃肠道出血且食管胃十二指肠镜和结肠镜检查无阳性发现的患者中,应尽快进行 CE。仅在少数不明原因、轻度、慢性缺铁性贫血患者中推荐使用 CE。CE 建议用于有息肉综合征或其他小肠癌的患者进行监测,这些患者需要进行小肠研究。结肠胶囊内镜不应常规替代结肠镜检查。应让患者了解 CE 的潜在风险,包括手术失败、胶囊滞留或漏诊病变。最后,应定义 CE 培训和报告的标准化标准。
CE 通常应被视为胃肠道出血、克罗恩病或乳糜泻患者的补充检查,这些患者已经进行了阴性或不确定的内镜或影像学检查。